Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a margem no Campeonato Nabisco?
 ###Tabelas: CREATE TABLE recent_markets (recent_markets_id AUTO_INCREMENT PRIMARY KEY, Ship size VARCHAR, Cargo VARCHAR, 2004 VARCHAR, 2005 VARCHAR, 2006 VARCHAR) CREATE TABLE 2009_newcomers_race_'b'_practice_times_and_leaderboard (2009_newcomers_race_'b'_practice_times_and_leaderboard_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Rider VARCHAR, Mon 24 Aug VARCHAR, Tues 25 Aug VARCHAR, Wed 26 Aug VARCHAR, Thurs 27 Aug VARCHAR, Fri 28 Aug VARCHAR) CREATE TABLE administrative_divisions_regions_and_states (administrative_divisions_regions_and_states_id AUTO_INCREMENT PRIMARY KEY, No. INT, State/Region VARCHAR, Districts INT, Town ships INT, Cities/ Towns INT, Wards INT, Village groups INT, Villages INT) CREATE TABLE wins_7 (wins_7_id AUTO_INCREMENT PRIMARY KEY, Year INT, Championship VARCHAR, Winning score VARCHAR, Margin VARCHAR, Runner(s)-up VARCHAR) CREATE TABLE college_sports (college_sports_id AUTO_INCREMENT PRIMARY KEY, School VARCHAR, Mascot VARCHAR, Conference VARCHAR, National Titles INT, Founded INT)  
SELECT Margin FROM wins_7 WHERE Championship = nabisco championship